Ash & We Are ScientistsWashington Parks In which the two indiepop bands take a stereo channel each (Ash left, We Are Scientists right) to record a rollicking song about small-town life, in aid of multiple sclerosis. Great cause, great tune. Chris Salmon

Toddla TFly Sheffield producer Toddla T closes his new album Watch Me Dance with this heart-tugging conscious reggae track, featuring a melancholy Ms Dynamite and the daydreamy harmonies of Jamaica's the Silvertones, who are reggae royalty. Caroline Sullivan

The MekonsNever Been in a Riot Many angry songs could soundtrack this week's turmoil, but I've found myself reaching for the Leeds post-punk band's satirical 1978 angular racket, a diary of a would-be revolutionary who was "always in the toilet" while Rome burned. Dave Simpson

War on DrugsBaby Missiles Standout track from Slave Ambient, album No 2 from these Philadelphian gossamer-rock aces. It shares Kurt Vile's devastating, melancholic melodies and gauzily beautiful guitar hazes, and adds a pulsing, krautrock-Springsteen momentum all of its own. Tom Hughes